diff --git a/Cargo.lock b/Cargo.lock
index cce0a8e4bbc..f3f72b586e0 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1243,7 +1243,7 @@ dependencies = [
 [[package]]
 name = "js"
 version = "0.1.3"
-source = "git+https://github.com/servo/rust-mozjs#342f304a455080acf64f5ceb40a7f8059481ca01"
+source = "git+https://github.com/servo/rust-mozjs#15ff1e83446e998112dcde731610e8b60cc32abf"
 dependencies = [
  "cmake 0.1.17 (registry+https://github.com/rust-lang/crates.io-index)",
  "heapsize 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",